i have a 94 blazer that we use for snowmobile trail grooming, and the 4.3 is getting a little weak. has anyone ever put in a chev inline six cylinder motor in one of these trucks? is it tough to do, and how did it turn out? thanks. foodtown@sasktel.net

 

The problem with the newer I6 engines is their length and height. The I6 has 2 extra cylinders to add to its length and because the cylinders are vertical, the overall height of the engine is taller as well.

With that said, small block v8s have been swapped into the s-series platform many, many times with great results. Being a '94 and what I can assume is offroad use, you could do a carb'd v8 swap and have plenty of power.

If you are interested in a v8 swap, the place to check out is JagsThatRun.com. They quite literally wrote the book on s-series v8 swaps.

 

As a friend of mine says, the WHY question occurs to me. I'd suggest either fixing the V6 or going to a V8.

 

ok, i will scrap that one.now, how about installing a 4.3 from a 91 that is tbi, into my 94 blazer, which is also a 4.3 but mpi? any troubles with computers and such? thanks